Quick Notes

Q: Can I use Mitsubishi Diamondback Linesets on a City Multi system in compliance with Conservation Construction Code of New York State (ECCCNYS)? A: Mitsubishi recommends following all local codes. Diamondback linesets come from the factory with Â½â€ of insulation. An installer can either apply extra insulation directly over the Diamondback Lineset, or may revert to using ASHRAE 90.1 The ECCNYS requires 1-1/2â€ insulation on all refrigerant lines. Chapter 5 â€“ Commercial Energy Efficiency (Section 501 â€“ General) of the ECCCNYS states: â€œThese commercial buildings shall meet either the requirements of ASHRAE/IESNA Standard 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings, or the requirements contained in this chapterâ€ ASHRAE recommends Â½â€ insulation on all refrigerant lines. One caveat to referring to ASHRAE 90.1 to meet New York State code, is that ASHRAE 90.1 must be used in its entirety throughout the project.